Mine car



A. R. LONG Aug. 10, 1937.

MINE CAR Filed April 16, 1934 5 Sheets-Sheet l a G F FIG. 7.

FIG. 6.

FIG. 5.

INVENTOR.

%Z%WZ ATTORNEYS.

A. R. LONG MINE CAR Aug. 10, 1937.

Filed April 16, 1934 5 Sheets-Sheet 2 FIG. 8. 66

FIG. 12. FIG. 13.

H R O T N E V m u m L m 4% d h .m m .P

' A. R. LONG Aug. If), 1937.

MINE CAR Filed April 16, 1934 5 Sheets-Sheet 5' W INVENTOR,

\3 .Ar'mis f'aad R. Lang BY i 1% v ATTORNEYS.

Patented Aug. 10, 1937 Niro STATES PATENT OFFIQE MINE CAR Application April 16, 1934, Serial No. 720,903

30 Claims.

The present invention relates to mine cars, and more particularly to the end and bumper constructions thereof.

Various makes and models of mine cars differ not only as to chassis and body construction but also as to the distance of the bumpers, and more particularly the buffer plates, castings or aprons thereof above the rails of the track. This means 7 that frequently when two mine cars of different makes or models are coupled together, the buffer plates confronting one another do not align and when they come together, as when backing the train of cars, only part of the surface of the bumper intended to engage the adjacent bumper actually contacts, with resulting stresses and strains which are destructive to these units and to the bumpers and car frames.

Furthermore, the various makes and models of cars differ as to frame and body construction.

Some have channeled side bars, some Z-bars, some pressed plates formed integral with a part of the car floors or side pieces, and some are of composite construction in that they have wooden floors and metal sides. Each of these presents 5 different problems when applying bumpers thereto, so that the shock incident to bumping, taking up of the load while the train is being started, and when the brakes are applied, are transferred to the frame as a whole. Again, the depth of the 30 side bars of the car frames of different makes and models of mine cars may vary, so that the bumpers may be even with the tops of the side bars of some, even with the bottoms of others, or may be intermediate the tops and bottoms of still others.

It is one of the principal objects of the present invention to provide mine car end and bumper constructions which may be fabricated from sheet metal to the general configuration desired and 40 subsequently bent, and if necessary further fabricated to suit the particular conditions incident to installation on the particular makes and models of mine cars so that for these varieties of cars the general bumper arrangement will be the same,

45 and so that all will be a substantially uniform distance above the rails of the track.

Another object of the invention is to provide mine car end and bumper constructions which utilize a minimum of material consistent with 50 strength and durability, and particularly to provide such constructions as will not sag or droo-p even tho subjected to rough usage. This is in part accomplished by providing the bumper, extending crosswise of the car end, with two pairs 55 of attaching plates extending rearwardly from the end portions of the bumper and in embracing, attached relation to web-like side portions of the car.

Other objects and advantages of the invention will appear in the following detailed description, 5 taken in connection with the accompanying drawings, forming a part of this specification, and in which drawings:

Figure -1 is a perspective view of the upper part of a front or dump end bumper of a mine car 10 looking toward the inside end of same.

Figure 2 is a similar view of the lower part thereof.

Figure 3 is a perspective view of a draw bar for use with such bumper. 15

Figure 4 is a perspective view of a reinforcing bar which maybe provided beneath the horizontal flange of the upper part of the bumper.

Figure 5 is a vertical cross sectional view showing parts of the bumper applied to a mine car 20 having aside bar of 2 cross section.

Figure 6 is a similar View showing application of the bumper to a mine car having a side bar of channel cross section.

Figure '7 is a similar view showing application 0f the bumper to a car of pressed metal where the side member is integral with the bottom of the car.

Figure 8 is a perspective view of the upper part of a rear or closed end bumper of a mine car looking toward the inside end of same.

Figure 9 is a similar view of the lower part thereof.

Figure 10 is a perspective view of a draw bar for use with such bumper.

Figure 11 is a perspective view of a reinforcing bar which may be provided beneath the horizontal flange of the upper part of the bumper.

Figure 12 is a vertical cross sectional view showing parts of the bumper applied to a mine car having a side bar of 2 cross section.

Figure 13 is a similar view showing application of the bumper to a mine car having a side bar of channel cross section. V

Figure 14 is a view similar to Figure 12 showing application of the bumper to a car of pressed metal, where the side member is integral with the bottom of the car.

Figure 15 is a longitudinal vertical sectional view thru a mine car equipped with a front or dump end bumper, and a rear or closed end bumper constructed according to the present invention.

Figure 16 is a perspective View of parts of the front or dump end. bumper.

Figure 17 is a similar view of the rear or closed end bumper.

Figure 18 is a perspective view of an elongate bumper block or buffer unit which may form a part of the bumper construction.

Figure 19 is a perspective view of a bumper cap.

In the drawings, where like characters designate like parts thruout the views, A is the chassis of the mine car which, in the example shown, is similar to that disclosed in Patent #1,834,463, granted to me December 1, 1931, on Mine cars, and includes longitudinal side bars or beams B, axles C extending crosswise thereof and wheels D mounted on axles C. Carried by the chassis A is a floor E extending part of or the full length of the chassis, as desired, side pieces, similar to that designated F in Figure 15, a closed end piece G, and a pivoted end piece H at the dump end of the car.

In the example shown, the car being of the end dump type, two different forms of end and bumper constructions are shown, that at the front or dump end being designated J, and that atthe rear or closed end K.

By way of example, the longitudinal beams B of the car chassis A are Z-bars each comprising an upper outwardly extending flange L, a lower inwardly extending flange M, and an upright web N joining the flanges L and. M as shown more particularly in Figures 5 and 12, however, in Figures 6 and 13 is disclosed a form of car chassis where the longitudinal beam is of channel shape with outwardly extending flanges O and P, joined by upright web Q. In Figures '7 and 14 is shown a still further different form of car chassis where the upright web R, is integral with the car bottom portions S and T. These are typical examples of mine car constructions and it will be noted that in some instances the web portions are relatively deep, so that there is considerable surface at the inner and outer faces against which attaching flanges of the end and bumper construction may engage, whereas, 'withother constructions the web-like portions are not so deep and it may be necessary or desirable to cut some of the material of the attaching flanges from the units forming the car end and bumper constructions when fitting same to such makes or models of cars.

Referring first to the form of end and bumper construction J for the dump end of the car, it includes a pair of companion upper and lower units 20 and 2|, respectively, which join the ends of the car side portions or longitudinal beams and serve as a part of the bumper construction, and a draw bar 22, which may be continuous from one end of the car to the other, as is sometimes the usual practice, or may terminate inwardly of the bumper construction as shown in Figure 15. In the example shown, the bumper construction includes an elongate buffer unit 23, preferably of yieldable or resilient material, such as wood, and a buffer cap 24 similar to that shown in my patent on Mine cars, 1,922,310, granted Aug. 15, 1933. With this construction it is preferred to provide a reinforcing bar 25 which is disposed beneath the draw bar 22 for cooperation with the usual coupling pin, not shown in the drawings.

' Unit 2!] is made from a piece of fabricated sheet metal, in the example shown, including a polygonal bed plate 2'1; a horizontal buffer unit confining flange 28 along one edge of the bed plate; and a. pair of upright side attaching flanges 29 extending along opposite side edges of the bed plate and preferably disposed in planes in right angular relation to the plane of the horizontal flange 23. When assembling this unit 20 relative to the mine car, the bed plate 21 is inclined to the horizontal, so that the coal will slide thereover when dumping. The flange 28 extends along the high edge of bed plate 27 and for a purpose to be subsequently set forth there is provided a slot 3!] at the juncture between the bed plate 21 and flange 28. The side attaching flanges are downturned along the inclined opposite edges of bed plate 2 and are intended for engagement with the inside, confronting faces of the web-like side portions of the car as shown in Figures 5, 6 and '7. When installing the end and bumper construction it may be necessary to cut from the lower marginal portion of the flanges 29, some of the material, especially where the flanges are intended to rest upon inwardly directed flanges such as M of beams B. The flange 28 is provided with an aperture 3i for the coupling pin and a plurality of perforations 32, the purpose of which will be subsequently set forth.

Referring to unit 2!, it comprises a polygonal bed plate portion 33; a horizontal buffer unit confining flange 33 extending longitudinally of one edge of the bed plate 33; and a pair of upright side attaching flanges 35 extending along opposite side edges of the bed plate 33 and disposed in planes in right angular relation to the plane of the horizontal flange 34. The flange 34 is connected to the bed plate 33 by an upright abutment wall 36 against which, in practice, the

er construction is assembled relative to the side beams of the car, the bed plate 33 is also in an inclined position, fitting between the flanges 29 of unit 20. There is provided at the juncture between bed plate 33 and the upper portion of wall 36, a slot 3l to align with slot 33, and thru which the draw bar 22 extends, as shown in Figures 15 and 16. The slot 3'1 also accommodates the reinforcing bar as will be'subsequently described. The flange 34 is provided with an aperture 38 aligning with aperture 3!, also a series of perforations 33 aligning with those designated 32 of 'unit 28. The side flanges 35 are upturned from the end portions of flange 33 and are intended to extend along and engage the outer faces of the web portions of the car frame, as shown in Figures 5, 6 and 7. Here also it may be necessary to shear off some of the upper marginal portion of the flanges 35 when installing the unit relative to the car frame or chassis, much depending upon the depth of the web portion.

Units 29 and 2! are assembled in nested relation in that bed plate 2'! rests upon bed plate 33, the flanges 21 being accommodated in passageways 33 between bed plate 33 and flanges 35, at which time the flanges 29 and 35 are spaced apart so as to embrace the web-like portion of the car frame. The draw bar 22 comprises a terminal portion 4!, provided with an aperture 42 aligning with 3! and 38 of flanges 28 and 34; a rearwardly and downwardly extending portion 43 which projects thru the slots so and 37; and a securing portion 44 held, as by rivets 55 to the bed' plates 21 and 33. It is to be observed that the draw bar 22 has no right angular bend and the securing portion 44 of the bar may be relatively long so as to permit the use of many rivets or other fastening means in securing the bar to the plates 21 and 33. As may be noted from Figures 15 and 16, the attaching portion forms no obstruction to sliding of the coal over the bed plate 27 being beneath the plates 27.

buffer unit 23 engages. When the end and bumpand 33. This assembly is. also. sturd'y,.since.the pull upon the draw bar istransmitted tothe iwvo bed plates, and thence to the car: sidesthru the flanges 29 and 35.

The reinforcing bar may comprise a terminal portion 47 which underlies flange 23, it being provided with an aperture-48= aligning with apertures 3| and 38; a rearwardly and downwardly inclined portion 49 extendi'ngthru slot 31; and a rear terminal portion 50' which may be secured to draw bar 22 by some of the rivets 65. As is shown in Figures 15 and 16, the terminal portion 4| of draw bar 22 is disposed, in spaced relation'above flange 28 for the reception of a coupling'link, not shown in the drawings. The-aligned apertures 3|, 38, 42 and 48' receive the coupling pin, not shown in the drawings. I As is shown in Figure 18; the buffer unit 23 is an elongate block provided with a: groove 5| extending transversely of the block. from front to'rear facesthereof to receive the reinforcing bar 25, this groove being substantially midway the ends of the block, where is also provided an elongate slot 52 which, together with the series 'of elongate slots- 53 are provided so as to permit compression and expansion of the block in a manner set forth inthe aforesaid Patent 1,922,310, it being understood that the series of perforations 32 and 39 receive bolts, not shown, in the drawings, which'extend thru the slots 53.

The reinforcing bar 25 serves a dual purpose, that is, to reinforce the bumper construction where it receives the coupling pin and to center the block or buffer unit 23 with respect to the longitudinal axis of the car.

The buffer cap shown in- Figure 19 is similar to that shown in the aforesaid Patent 1,922,310;

and is provided with an elongate slot. 54 in each of'its" upper and lower flanges 55- and 56, thus permitting the buffer cap to slide relative to the confining flanges 28 and 3d, which the cap; em-' braces, as shown in Figure 15.

Referring now to the form. of end and'bumper constructionK for the closedend of the car, it includes a pair of companion upper and lower units 60 and 5|, respectively, which join the ends of the car side portions or longitudinal beams and serve as a part of the bumper. con.- struction; and a draw bar 62, which may beicontinuous from one end of the car to the other, or may terminate inwardly of the bumper construction as shown in Figure 15. In this example also, the bumper construction includes an-elonr gate buffer unit '23, and a buffer cap 24, as pre-' viously described. If "desired, a reinforcing bar 63 may be provided, disposed beneath the draw bar 62 for cooperation with the usual coupling pm.

Unit Ell comprises a pol'ygonal' bed plate 65; a horizontal buffer unit confining flange 66 paralleling one edge of the'bedp'late 65'and' joined thereto by an upright abutment wall 6T, against which the buffer unit 23 engages, when the parts are assernbled; and a pair ofupright side attaching flanges 68 extending along opposite side edges of bed' plate 65 and disposed in planes in right angular relation to the plane of flange 66. When assembled inplace, the bed plate 551 may form a portion. of the bottom of the car, it being M horizontally disposed, as shown. in Figures 15 and 17. The horizontal flange 66 'is provided with an aperture 69 and a series of perforations ill corresponding to aperture 3| and perforations 32 of flange 28. The side flanges 61 are downturned from the end portions of flange '69 and when. assembled relative to the side portions of the car it may be necessary to shear away a portion of the lower margins of these flanges. As is shown more clearly in Figure 8, the side flanges 68 are spaced. from bed plate 65, providing passageways 10 which correspond to passageways'dll. shown in Figure 2.

With reference to unit 6|, it comprises a bed plate 1|, polygonal in shape; a horizontal buffer unit confining flange 12 which extends along, or forms a continuation of one marginal portion of bed plate H and a pair of upright side attaching flanges l3 extending along opposite side edges of bed plate H and disposed in planes at right angles to the plane of flange 12. When in assembled, nested relationto unit 60, the bed plate 65: rests upon bed plate H, and the flanges 13 are accommodated in passageways 10. The bed plate 65 engages the inner confronting faces of flanges 13, while the latter rest against the inner confronting faces of the car sides as shown in Figures 12, 13 and 14. The flanges 68 engage the outer faces of the web-like car sides; Flange 72 is provided with an aperture Hi and a series of perforations 15, corresponding to the aperture 38 and perforations 39 shown in Figure 2. It will be noted that flanges 73 are upturned along the marginal portions of both the bed plate 7! and flange 12, the flanges 73 provided with notches 76 to accommodate flange 66 as shown 0 in Figure 17 The draw bar 62 comprises a terminal portion ll provided with an aperture 78 for the coupling pin; a rearwardly and downwardly extending portion 19; a vertical portion 8|]; and an attachingportion 8|. When this draw bar is assembled relative to the units 50 and El, the attaching portion 8| is secured to bed plates 65 and II as by rivets 82; the vertical portion 85 abuts wall 61, and the terminal portion 11 overlies flange 66 with sufficient space for the accom: modation of a link of the coupling chain not shown in the drawings.

The reinforcing bar 63 is provided with an aperture 83 aligning with aperture 69. This reinforcing bar, corresponding to bar 25 is disposed beneath flange 56 and may be welded, riveted-, or otherwise secured in place. When the buffer unit 23 is disposed between flanges 66 and E2, the groove 5| accommodates reinforcing bar 53''.

It will be observed that there is considerable similarity between the car end and bumper constructions of the two forms disclosed, an important feature of the invention being that the bumper extending crosswise of the car end, in each instance includes two pairs of attaching plates extending rearwardly from the end portions of the bumper and in embracing relation to the web-like side portions of the car, no matter whether the web-like portion be the web N in Figures 5 and 12; the web Q in Figures 6 and 13, or the web R in Figures '7 and 14. The attaching' flanges 29 and of bumper construction J may be secured to the web portions by rivets 9 2 and 9|, while the side flanges 68 and T3 of bumper construction K may be secured to the web-like side portions by rivets 92 and 93. If desired, filler pieces 94 may be provided inwardly of flanges 35, as shown in Figure 16, to bridgethe space between these flanges and the ends of horizontal flange 28. These filler pieces may be welded or riveted in place. Likewise, filler pieces 93 may be provided'betweenflanges 68and T3 of bumper construction K. In, each; instance, the filler the combination with an elongate buffer unit, of

pieces 94 and 96 may be of material equal to the thickness of the web-like portions of the car sides.

In connection with each bumper construction J and K it may be desirable to dispense with one of the polygonal bed portions of each assembly where the cars are intended for comparatively light loads. However, it is to be observed that, in the preferred form, these bed plates, interposed between and connecting the side portions of the car give added strength to the assembly and serve to prevent the bumper from drooping.

It is to be understood that various changes in details may be necessary to adapt the car end and bumper constructions to different makes and models of mine cars, however, the parts are so arranged that there are attaching flanges for engagement with opposite faces of the side members of the car and these attaching flanges may be cut to fit in a manner that the bumpers, and particularly the buffer caps will all be substantially the same distance from the track.

I claim:

1. In a mine car end and bumper construction, the combination with an elongate buffer unit, of a pair of companion units each comprising, a polygonal bed plate, a horizontal flange along one edge of said bed plate, and a pair of vertical side attaching flanges in planes in right angular relation to the plane of said horizontal flange, and at opposite edges of said bed plate, said companion units arranged in nested relation with the bed plate of one above the bed plate of the other, with the adjacent side flanges of the units in spaced apart relation, and with the said horizontal flanges spaced apart receiving said buffer unit therebetween.

2. In a mine car end and bumper construction, the combination of an elongate buffer unit, of a pair of companion units of fabricated sheet metal, each comprising a rectangular bed plate portion, a horizontal buifer unit confining flange along one edge of said bed plate portion, and a pair of vertical side attaching flanges paralleling opposite side edges of said bed plate portion and disposed in planes in right angular relation to the plane of said horizontal flange, said companion units arranged with the bed plate portion of one above the bed plate portion of the other and with the buifer unit flanges and side flanges, respectively, in confronting spaced apart relation to each other.

3. In a mine car end and bumper construction,

a pair of companion units, one at least of said units including a polygonal bed plate portion, and both of said units each comprising a horizontal bufier unit confining flange paralleling one side edge of said bed plate portion, and a pair of vertical side attaching flanges extending along opposite edges of said bed plate portion and disposed in planes in right angular relation to the plane of said horizontal flange, said companion units arranged with the horizontal flanges, and the side flanges, respectively, in confronting spaced apart relation to each other.

4. In a mine car end and bumper construction, the combination with an elongate bufier unit, of a pair of companion units each comprising, a polygonal bed plate portion, a horizontal. flange along one edge of said plate portion, and one of said units having vertical side flanges integral with the bed plate portion along opposite side edges and in planes at right angles to the plane of the horizontal flange thereof, and the other of said units having vertical flanges integral with the ends of the horizontal flange thereof and in planes at right angles to the plane of said last mentioned horizontal flange, said companion units arranged in nested relation with the bed plate of one above the bed plate of the other, with the adjacent side flanges of the .units in spaced apart relation, and with the said horizontal flanges spaced apart receiving said buffer unit therebetween.

5. In a mine car end and bumper construction, the combination with an elongate buffer unit, of a pair of companion units each comprising, a polygonal bed plate, a horizontal flange along one edge of said bed plate, and a pair of vertical side attaching flanges in planes in right angular relation to the plane of said horizontal flange, and at opposite edges of said bed plate, the horizontal flange of one of said units being connected toits respective bed plate portion by a vertical wall against which the buffer unit abuts, and said companion units arranged in nested relation with the bed plate of one above the bed plate of the other, with the adjacent side flanges of the units in spaced apart relation, and with the said horizontal flanges spaced apart receiving said bufier unit therebetween.

6. In a mine car end and bumper construction, the combination with an elongate buffer unit, of a pair of companion units each comprising, a polygonal bed plate, and a horizontal buffer unit confining flange along one edge of said bed plate, the horizontal flange of one of said units being connected to' its respective bed plate by a vertical wall against which the buffer unit abuts, and said companion units arranged with the bed plate of oneiabove thebed plate of the other.

'7. In a mine car end'and bumper construction, the combination with an elongate buffer unit, of a pair of companion units each comprising, a polygonal bed plate, and a horizontal buffer unit confining flange along one edge of said bed plate, the horizontal flange of at least one of said units being connected to its respective bed plate by a vertical wall against which the buffer unit abuts, and said companion units arranged with the bed plate of one above the bed plate of the other.

8. In a mine car end and bumper construction, the combination with opposite vertical web-like side portions of the car and an elongate buffer unit extending crosswise of the car, of a pair of companion units each comprising, a polygonal bed plate, a horizontal flange along one edge of said bed plate, and a pair of vertical side attaching flanges in planesin right angular relation to the plane of said horizontal flange, and at opposite edges of said bed plate, said companion units in nested relation with the bed plate of one above the bed plate of the other, between said side portions of the car, and with the horizontal flanges in spaced apart relation receiving said buffer unit therebetween and with the side flanges of one of the units secured to the inside and the side flanges of the other unit secured to the outside of said side portions of the car.

9. In a mine car end and bumper construction, the combination with opposite vertical web-like side portions of the car and an elongate buffer unit extending crosswise of the car, of a pair of companion units arranged in nested relation, one at least of said units including a polygonal bed plate portion fitting between the said side portions of the car, and both of said units each comprising a horizontal flange paralleling one side edge of said bed plate portion, and a pair of vertical side flanges extending along opposite edges of said bed plate portion and disposed in planes in right angular relation to the plane of said horizontal flange, said companion units arranged with the horizontal flanges in spaced apart relation receiving said buffer unit therebetween and with the side flanges of one of said units secured to the inside and the side flanges of the. other unit secured to the outside ofsaid side portions of the car.

10. In a mine car end and bumper construction, the combination with an elongate buffer unit, of upper and lower units each comprising, a polygonal bed plate portion, a' horizontal flange along one edge of said bed plate portion, and. a pair'of upright side attaching flanges extending along opposite side edges of said bed plate portion and disposed in planes in right angular relation to the plane of said horizontal-flange, said bed plate portions of the units being inclined to the horizontal, one above the other, the horizontal flange of the lower unit being spaced below :the companion flange of the upper unit by an upright abutment wall connecting it and the bed plate portion of the lower unit, and against which said buffer unit abuts, and the companion side flanges of the upper and lower units arranged in spacedapart confronting relation.

'11. In a mine car end and bumper construction, the combination of an elongate buffer unit, of upper and lower units each comprising, a polygonal bed plate portion, and a horizontal flange along one edge of said bed plate portion, said bed plate portions of the units being inclined to the horizontal, one above the other, and the horizontal flange of the lower unit being spaced below the companion flange of the upper unit by an upright abutment wall connecting it and the bed plate portion of the lower unit, and against which said buffer unit abuts.

' 12. In a mine car end and bumper construction, the combination of an elongate buffer unit, of upper and lower units each comprising, a polygonal bed plate portion, and ahorizontal flange along one edge of said bed plate portion, said bed plate portions of the units being inclined to the horizontal, one above the other, and the horizontal flange of the lower unit being spaced below the companion flange of the upper unit by an upright abutment wall connecting it and the bed plate portion of the lower unit, and against which said buffer unit abuts; and a draw bar including a terminal portion positioned spaced horizontally above the horizontal flange of the upper unit and thence extending downwardly thru the bed plate portionsof the upper and lower units and secured to the under side of the bed plate portion of the latter.

' 13 In a mine car end and bumper construction, the combination of an elongate buffer unit,

of upper and lower units each comprising, a-

polygonal bed plate portion, and a horizontal flange along one edge of said bed plate portion, said bed plate portions of the units being inclined to the horizontal, one above the other,'and the horizontal flange of the lower unit being spaced below the companion flange of the upper unit by an upright abutment wall connecting it and the bed plate portion of the lower unit, and against which said buffer unit abuts; and, a draw bar including a terminal portion positioned spaced horizontally above the horizontal flange of the upper unit-and thence extending downwardly thru the bed plate portions of the upper and lower units and secured to the lower unit.

14. In a mine car end and bumper construction, the combination with an elongate bufler unit, of upper and lower units, one at least of said units including an inclined polygonal bed plate portion and both of said units each comprising a horizontal flange paralleling one of the side edges of said bed plate portion and a pair of vertical side attaching flanges extending along opposite edges of said bed plate portion and disposed in planes in right angular relation to the plane of. said horizontal flange,'the horizontal flange of the lower unit being spaced below the companion flange oi the upper unit and having an upright abutment wall against which said buffer unit abuts, and the companion side flanges of the upper and lower units arranged in spaced apart confronting relation.

15. A fabricated sheet metal mine car end and bump'erumt comprising, a polygonal base plate inclined to the horizontal, a depending vertical wall integral with and extending along the upper edge thereof, a horizontal flange integral. with and outstanding from the lower marginal portion of said wall, and vertical attaching flanges along and integral with the end portions of said horizontal flange. and extending alongside opposite edges of said base plate.

16. A fabricated sheet mine car end and bumper unit comprising, a polygonal base plate inclined to the horizontal, a depending vertical wall integral with and extending along the upper edge thereof, a horizontal flange integral with and outstanding from the lower marginal portion of said wall, and upturned vertical attaching flanges along and integral with the end portions of said horizontal flange and extending alongside opposite edges of said base plate.

17. In a mine car end and bumper construction, the combination with opposite vertical web-like side portions of the car and an elongate bufler unit extending crosswise the car, of upper and lower units each comprising, a polygonal bed plate portion, a horizontal flange along one edge of said bed plate portion, and a pair of upright side attaching flanges extending along opposite side edges of said bed plate portion and disposed in planes in right angular relation to the plane of said horizontal flange, said bed plate portions of the units being inclined to the horizontal, one above the other, between the side portions of the car, with the horizontal flanges in spaced apart relation receiving said buffer unit therebetween, and with the side flanges of one of the units secured to the inside and the side flanges of the other unit secured to the outside of said side portions of the car.

' 18. In a mine ear end and bumper construction, the combination with opposite vertical weblike side portions of the car and an elongate bufler unit extending crosswise the car, of upper and lower units arranged in nested relation, one at least of said units including an inclined polygonal bed plate portion fitting between said side portions of the car, and both of said units each comprising a horizontal flange paralleling one side edge of said bed plate portion, and a pair of vertical side flanges 'extending along opposite edges of said bed plate portion and disposed in planes in right angular relation to-the plane of said horizontal flange, said companion units arranged with the'horizontal flanges in spaced apart relation receiving said buffer unit therebetween andwith theside flanges of one ofthe units secured to the inside and the side flanges of the other'unit secured to the outside of said side portions of the car.

19. In an end dump mine car construction, bumper means at the dump end thereof, including a plate forming at least a portion of the car bottom at the dump end thereof, said plate inclined upwardly toward the car end, and a draw bar secured to said plate beneath said plate, extending upwardly therethru and having its terminal portion above the bumper means.

20. In a mine car end and bumper construction, the combination with an elongate bufier unit, of upper and lower units comprising, a polygonal base plate portion, a horizontal flange along one edge of said bed plate portion, and a pair of upright side attaching flanges extending along opposite sides edges of said bed plate portion and disposed in planes in right angular relation to the plane of said horizontal flange, said bed plate portions of the units being horizontal, one above the other, the horizontal flange of the upper unit being spaced above the companion flange of. the lower unit by an upright abutment wall connecting it and the bed plate portion of the upper unit, and against which the buffer unit abuts, and. the companion side flanges of the upper and lower units arranged in spaced apart confronting relation.

21. In a mine car end and bumper construction, the combination with an elongate buifer unit, of upper and lower units each comprising, a polygonal bed plate portion, and a horizontal flange along one edge of said bed plate portions, said bed plate portions of the units horizontal, one above the other, and the horizontal flange of the upper unit being spaced above the companion flange of the lower unit by an upright abutment wall connecting it and the bed plate portion of the upper unit, and against which said buifer unit abuts.

22. In a mine car end and bumper construction, the combination With an elongate buifer unit, of a pair of companion units each comprising, a polygonal bed plate, a horizontal flange along one edge of said bed plates, and a pair of vertical side attaching flanges integral with the end portions of the horizontalflange thereof, extending along opposite sideedges of said bed plates and disposed in planes in right angular relation to the plane of said horizontal flange, the side flanges of one of said units being upturned from its respective horizontal flange and the side flanges of the other unitbeing downturned from its respective horizontal flange, said companion units arranged in nested relation with the bed plate of one above the bed plate of the other, With the adjacent side flanges of the units in spaced apart relation, and with the said horizontal flanges spaced apart receiving said buffer unit therebetween- 23. In a mine car end and bumper construction, the combination with an elongate bufier unit, of a pair of companion units each comprising, a polygonal bed plate, a horizontal buffer unit confining flange along one edge of said bed plates, and a pair of vertical side attaching flanges integral with the end portions of the horizontal flange thereof, extending along opposite side edges of said bed plates and disposed in planes in'right angular relation to the plane of saidhorizontal flange, the side flanges of one ofsaid units being upturned from its respectivehorizontal flange and the side flanges of the other unit being downturned from its respective unit confining flange along one edge of said bed plates, and a pair of vertical side attaching flanges integral with the end portions of the horizontal flange thereof, extending along opposite side edges of said bed plates and disposed in planes in right angular relation to the plane of said horizontal flange, the side flanges of one of said units being upturned from its respective horizontal flange and the side flanges of the other unit being downturned from its respective horizontal flange, said companion units arranged with the bed portion of one above the bed portion of the other.

25. A fabricated sheet metal mine car end and bumper unit comprising, a horizontal polygonal base plate, an upstanding wall integral with and extending along one edge ofsaid base plate, a horizontal flange outstanding from and integral with the upper edge of said wall,-,and vertical attaching flanges along and integral with the end portions of said horizontal flange and extending alongside opposite edges of said base plate.

26. A fabricated sheet metal mine car end and bumper unit comprising, a horizontal polygonal base plate, an upstanding wall integral with and extending along one edge of said base plate, a horizontal flange outstanding from and integral with the upper edge of said wall, and downturned vertical attaching flanges along and integral with the end portions of said horizontal flange and extending alongside opposite edges of said base plate.

27. In a mine car end construction, the combination with opposite upright web-like side portions of the car, a pair of substantially horizontal and parallel plates extending crosswise of the car end, adjacent attaching flanges at each side of each plate, each of said attaching flanges being substantially vertical and parallel to said weblike side portions and having one substantially horizontal boundary edge integral with its adjacent plate, and means for attaching said flanges to their respective web-like portions.

28. In a mine car end construction, the combination with opposite upright web-like side portions of the car, a pair of substantially horizontal and parallel plates extending crosswise of the car end, adjacent attaching flanges at each side of each plate, each of said attaching flanges being substantially vertical and parallel to said weblike side portions and having one substantially horizontal boundary edge attached to its adjacent plate, and means for attaching said flanges to their respective web-like portions and to their respective adjacent plates.

29. In a mine car end construction, the combination with opposite upright web-like side portions of the car, of a bumper extending crosswise of the car end including a buffer unit, spaced horizontal flanges extending crosswise of the car and receiving the buifer unit therebetween, and two pairs of attaching plates integral with the end portions of said flanges and in embracing attached relation to said web-like side portions of the car, and the line of conjunction of said attaching plates to said horizontal flanges being in a substantially horizontal plane.

30. In a mine car end construction, the combination with opposite web-like side portions of the car, of a bumper extending crosswise of the car end including a bufier unit, spaced horizontal flanges extending crosswise of the car and receiving the buffer unit therebetween, and two pairs of attaching plates integral with the end portions of said flanges, one attaching plate of each pair being disposed at an inside face of the said web-like side portions of the car, and the other of said attaching plates of each pair being disposed at an outside face of said web-like side portions, and the line of conjunction of said attaching plates to said horizontal flanges being in substantially a horizontal plane, and means for securing said attaching plates to their respective side portions of the car.

ARMISTEAD R. LONG. 

